How to find area of cross section of rectangulat electrode?
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Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members. ... The elastic section modulus is defined as S = I / y, where I is the second moment of area (or moment of inertia) and y is the distance from the neutral axis to any given fiber.
"The area of cross section of a rectangular electrode is similar to the area of cross section of any rectangle. The only difference comes in the picture is to how the cross section has been made. Therefore the area of cross section depends on cross-sectioning the object, which may either produces the similar figure of the object or may bring some change to either a part or the whole part of the object. Roughly they treat it same as the whole object, therefore the area of cross section of a rectangular electrode be the area of cross section of a rectangle which is breadth multiplied with length."